Rangers officials expect Borbon will miss about four weeks, but it’s clear Martin’s promotion is not based solely on the need for an injury replacement. Martin, who signed a five-year, $15.5 million contract in April after defecting from Cuba, was hitting .348 at Frisco with a .435 on-base percentage. The only part of his game that has seemed a little bit in need of improvement has been his running game. Though he had 10 steals at Frisco, he was also caught eight times.

Martin is not expected in tonight’s lineup at Round Rock, but is expected to begin playing regularly there.